10. Are currently taking a monoamine oxidase inhibitor (MAOI), or have taken a MAOI within two weeks of screening (e.g., isocarboxazid - Marplan, phenelzine - Nardil, selegiline - Eldepryl, Emsam, Zelapar, and tranylcypromine - Parnate). Note: subjects may not discontinue taking a MAOI solely of the purposes of qualifying for the study.